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Chemical Engineering :: Fluid Mechanics

Fluid Mechanics - Section 1
Fluid Mechanics - Section 2
Fluid Mechanics - Section 3
Fluid Mechanics - Section 4
Fluid Mechanics - Section 5
Fluid Mechanics - Section 6
Fluid Mechanics - Section 7
Fluid Mechanics - Section 8
Fluid Mechanics - Section 9
Fluid Mechanics - Section 10
Fluid Mechanics - Section 11
Fluid Mechanics - Section 12
Fluid Mechanics - Section 13
Fluid Mechanics - Section 14
Fluid Mechanics - Section 15
Fluid Mechanics - Section 16
Fluid Mechanics - Section-17

  1. One poise (unit of absolute/dynamic viscosity) is equivalent to one

    2. A.
    gm/cm2. sec.
    B.
    gm/cm. sec.
    C.
    cm2/sec.
    D.
    m2/sec.

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  2. The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/f)-0.4, is called the __________ equation.

    3. A.
    Nikuradse
    B.
    Von-Karman
    C.
    Blausius
    D.
    Colebrook

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  3. Pressure drop for turbulent fluid flow through a circular pipe is given by

    4. A.
    64/Re
    B.
    C.
    D.

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  4. What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta ?

    5. A.
    0.64
    B.
    1.65
    C.
    0.32
    D.
    0.94

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  5. For an unstable equilibrium of a floating body (where, M = metacentre.)

    6. A.
    M is above G
    B.
    M is below G
    C.
    M & G coincide
    D.
    none of these

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  6. Which of the following can be used for the direct measurement of volumetric flow rate of slurry ?

    7. A.
    Venturimeter
    B.
    Orificemeter
    C.
    Rotameter
    D.
    Pitot tube

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  7. A pipe is defined as 'hydraulically smooth', if the friction factor

    8. A.
    is not a function of Reynolds number.
    B.
    for a given Reynolds number remains constant even on further smoothening of the pipe.
    C.
    is zero irrespective of the Reynolds number.
    D.
    none of these.

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  8. A Pitot tube indicates 5 cm of water (manometer) when it is being used for measuring velocity of air. The velocity of air in m/sec is

    9. A.
    5
    B.
    14.1
    C.
    56.22
    D.
    28.2

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  9. Delivery of insufficient quantity of liquid by a pump may be caused by

    10. A.
    air leak in the inlet
    B.
    low rpm
    C.
    too high a lift
    D.
    all (a), (b) and (c)

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  10. Fluid resistance to shear depends upon its

    11. A.
    rate of transfer of molecular momentum.
    B.
    cohesion.
    C.
    both (a) and (b).
    D.
    neither (a) nor (b).

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